On Wednesday 05 April 2006 04:51 pm, Michael Goodrich wrote:
> Oops, I just realized that you gave me the answer, namely that it won't
> find fixed points of numeric sets of equations.
>
> Pity, that would really have made Haskell useful for this kind of
> scientific computing.
See section 4 of:
On 4/5/06, Robert Dockins <[EMAIL PROTECTED]> wrote:
> Hey, if we wanted a private conversation, we'd take it off-list. :-)
>
:-)
> > Do you have any reference to the fact that there is any diagreement
> > about the term? I know it has been used sloppily at times but I think
> > it is pretty well
Oops, I just realized that you gave me the answer, namely that it won't find fixed points of numeric sets of equations.
Pity, that would really have made Haskell useful for this kind of scientific computing.
On 4/5/06, Brandon Moore <[EMAIL PROTECTED]> wrote:
Michael Goodrich wrote:> Looks like
[questions such as this one should go to cafe]
On Wednesday 05 April 2006 20:41, minh thu wrote:
> 1/ i want to read some binary file (e.g. targa file format : *.tga).
>
> -- first way : via IOUArray
> showInfoHeader1 handle = do
> a <- newArray_ (1,8) :: IO (IOUArray Int Word8)
> hGetArra
On 4/5/06, Roberto Zunino <[EMAIL PROTECTED]> wrote:
Michael Goodrich wrote:[snip]> r = r2+2*step*rdc> rdc = (rd2+rd1+rd0)/6> rd0 = c0*c0*m> c0 = baz(z0)> z0 = 6.378388e6-rThe equations above form a loop: each one requires the one below it, and
the last one requires the first on
Michael Goodrich wrote:
[snip]
r = r2+2*step*rdc
rdc = (rd2+rd1+rd0)/6
rd0 = c0*c0*m
c0 = baz(z0)
z0 = 6.378388e6-r
The equations above form a loop: each one requires the one below it, and
the last one requires the first one.
(And yes, baz is strict)
Regards,
Roberto Z
On 4/5/06, ihope <[EMAIL PROTECTED]> wrote:
On 4/5/06, Michael Goodrich <[EMAIL PROTECTED]> wrote:> Looks like my calulation involves a self referential set of definitions.>> Is Haskell not able to deal with a self referential set of definitions?
Yes, it is, but not if that definition doesn't eval
Michael Goodrich wrote:
Looks like my calulation involves a self referential set of definitions.
Is Haskell not able to deal with a self referential set of definitions?
I was frankly hoing it would since otherwise there is then the specter
of sequence, i.e. that I have to finesse the order i
Brian Hulley wrote:
Greg Buchholz wrote:
Hmm. It must be a little more complicated than that, right? Since
after all you can print out *some* functions. That's what section 5
of _Fun with Phantom Types_ is about. Here's a slightly different
example, using the AbsNum module from...
http:
Neil Mitchell wrote:
Hi,
First, its useful to define referential transparency.
In Haskell, if you have a definition
f = not
Then this means that anywhere you see f, you can replace it with not.
For example
"f True" and "not True" are the same, this is referentially transparent.
Now lets def
On 4/5/06, Michael Goodrich <[EMAIL PROTECTED]> wrote:
> Looks like my calulation involves a self referential set of definitions.
>
> Is Haskell not able to deal with a self referential set of definitions?
Yes, it is, but not if that definition doesn't evaluate to a "proper"
value. For example:
Looks like my calulation involves a self referential set of definitions.
Is Haskell not able to deal with a self referential set of
definitions?
I was frankly hoing it would since otherwise there
is then the specter of sequence, i.e. that I have to finesse the
order in which things are calcu
On 2006-04-05 at 14:03EDT "Michael Goodrich" wrote:
> BTW, I can't seem to locate 'haskell-cafe'.
http://www.haskell.org/mailman/listinfo/haskell-cafe
> The message responding to my sign-up said nothing about
> haskell-cafe.
Perhaps it should. It's so long since I signed up to haskell
that I've
Hi All,
Since there is some interest in my EnumSet module, I am reposting it
here with a BSD license in anticipation of its rebirth as Data.Set.Enum.
Cheers, David
EnumSet.hs
Description: Binary data
David F. Place
mailto:[EMAIL PROTECTED]
__
On Apr 5, 2006, at 12:42 PM, Josef Svenningsson wrote:
Sorry to barge in in the middle of your discussion here..
Hey, if we wanted a private conversation, we'd take it off-list. :-)
On 4/5/06, Robert Dockins <[EMAIL PROTECTED]> wrote:
There is a fair bit of disagreement about what referent
On 2006-04-05 at 12:35EDT "Michael Goodrich" wrote:
> Greetings All:
>
> GHC gives: Fail: <>
>
> Hugs gives: [(ERROR - C stack overflow
Nowt's up wi' ' runtime error message. GHC's perfectly
lucid. It says your programme went into an infinite loop.
This sort of thing belongs on haskell-
Sorry to barge in in the middle of your discussion here..
On 4/5/06, Robert Dockins <[EMAIL PROTECTED]> wrote:
> There is a fair bit of disagreement about what referential
> transparency means. I found the following link after googling around
> a bit; it seems to address some of these issues.
>
>
On Apr 5, 2006, at 10:49 AM, Brian Hulley wrote:
Robert Dockins wrote:
On Apr 1, 2006, at 3:23 PM, Brian Hulley wrote:
[snip]
" For particular types T1 and T2, if (f (x::T1))::T2 === g x for
all x in T1 then f :: T1->T2 and g ::T1->T2 can be freely
substituted since the context T1->T2 cannot
Robert Dockins wrote:
On Apr 1, 2006, at 3:23 PM, Brian Hulley wrote:
[snip]
" For particular types T1 and T2, if (f (x::T1))::T2 === g x for
all x in T1 then f :: T1->T2 and g ::T1->T2 can be freely
substituted since the context T1->T2 cannot tell them apart."
Having thought about this a bit
Henning Thielemann wrote:
>
> On Mon, 3 Apr 2006, Jared Updike wrote:
>
>> or ambiguously) with your Sudoku solver? A rough mesaure of the
>> difficulty of the unsolved puzzle could be how long the solver took to
>> solve it (number of steps) (and the number of possible solutions)? Are
>> puzzles
On Mon, 3 Apr 2006, Jared Updike wrote:
or ambiguously) with your Sudoku solver? A rough mesaure of the
difficulty of the unsolved puzzle could be how long the solver took to
solve it (number of steps) (and the number of possible solutions)? Are
puzzles with multiple solutions usually considere
Jared Updike wrote:
...
P.S. After googling around for "haskell image manipulation" (in the
hopes of finding some Haskell image lib like VIPS [1] or the Python
Imaging Library [2]), I found the assignment spoken of
http://cs.anu.edu.au/Student/comp1100/assts/asst1/
just so everyone knows. BTW,
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